package com.sky.service.admin.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.BaseException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.admin.EmployeeMapper;
import com.sky.pojo.Employee;
import com.sky.result.PageResult;
import com.sky.service.admin.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import javax.annotation.Resource;
import java.time.LocalDateTime;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Resource
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO 登录时提交的数据
     * @return 登录成功返回员工对象
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();//

        //1、根据用户名查询数据库中的数据  select * from employee where username = #{username}
        Employee employee = employeeMapper.getByUsername(username); //
        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // 后期需要进行md5加密，然后再进行比对
        String md5DigestAsHex = DigestUtils.md5DigestAsHex(password.getBytes());

        if (!md5DigestAsHex.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }
        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     *
     * @param employeeDTO 新增员工数据
     */
    @Override
    public void insert(EmployeeDTO employeeDTO) {


        Employee exist = employeeMapper.getByUsername(employeeDTO.getUsername());
        if (exist != null) {
            throw new BaseException("账号已存在");
        }


        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
        //补充其他数据
        String password = DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes());
        employee.setPassword(password);
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
        employee.setStatus(StatusConstant.DISABLE);
//        employee.setCreateUser(BaseContext.getCurrentId());//获取当前用户id,使用线程
//        employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.insert(employee);
    }

    /**
     * 分页查询员工信息
     * @param queryDTO 查询条件
     * @return 分页查询结果
     */
    @Override
    public PageResult query(EmployeePageQueryDTO queryDTO) {
        PageHelper.startPage(queryDTO.getPage(),queryDTO.getPageSize());
        Page<Employee> page = employeeMapper.query(queryDTO);

        return new PageResult(page.getTotal(), page.getResult());
    }

    /**
     * 根据id查询员工信息
     * @param id 传入id
     * @return 返回该id的员工信息
     */
    @Override
    public Employee queryById(Integer id) {

        return employeeMapper.queryById(id);
    }

    @Override
    public void setStatus(Integer id, Integer status) {
        employeeMapper.setStatus(id,status);
    }

    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);

//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.update(employee);
    }


}
